Compounds of formula R.sup.1 CO--NH--CH(R.sup.2)--CONH--CH(R.sup.3)--X [wherein: R.sup.1 represents alkyl having an .alpha.-amino or protected .alpha.-amino substituent and an aryl, heterocyclic or heterocyclic-dithio substituent; R.sup.2 represents a variety of aliphatic and cycloaliphatic hydrocarbon groups, which may be substituted; R.sup.3 represents isobutyl, sec-butyl, benzyl or (C.sub.3 -C.sub.8 cycloalkyl)methyl; and X represents a group of formula --CH(--A--R.sup.4)--Y (in which: A represents a single bond or an alkylene group; R.sup.4 represents a carboxy group; a protected carboxy group, a carbamoyl group, an N-substituted carbamoyl group, a carbazoyl group, an N-substituted carbazoyl group or an acyl group; and Y represents a hydroxy group, a mercapto group or a formyl group), or a group of formula --P(O) (R.sup.5)--OH (in which R.sup.5 represents a substituted alkyl group having at least one substituent selected from carboxy groups, protected carboxy groups, N-substituted carbamoyl groups, carbazoyl groups, N-substituted carbazoyl groups, C.sub.2 -C.sub.7 aliphatic carboxylic acyl groups and aromatic carboxylic acyl groups)]; and their salts are renin inhibitors, which may be used in the treatment of angiotensin-induced hypertension.
化合物的
化学式为R.sup.1 CO--NH--CH(R.sup.2)--CONH--CH(R.sup.3)--X [其中:R.sup.1代表具有.alpha.-
氨基或受保护的.alpha.-
氨基取代基和芳基,杂环或杂环-二
硫取代基的烷基;R.sup.2代表多种脂肪族和环状脂肪族碳氢基团,可以被取代;R.sup.3代表异丁基,仲丁基,苄基或(C.sub.3-C.sub.8 环状烷基)甲基;X代表式--CH(--A--R.sup.4)--Y的基团(其中:A代表单键或烷基链;R.sup.4代表羧基,受保护的羧基,
氨基甲酰基,N-取代的
氨基甲酰基,
氨基苯甲酰基,N-取代的
氨基苯甲酰基或酰基;Y代表羟基,巯基或甲酰基),或式--P(O)(R.sup.5)--OH的基团(其中R.sup.5代表具有至少一个取代基的取代烷基,所述取代基从羧基,受保护的羧基,N-取代的
氨基甲酰基,
氨基苯甲酰基,N-取代的
氨基苯甲酰基,C.sub.2-C.sub.7脂肪族
羧酸酰基和芳香族
羧酸酰基中选择)];它们的盐是肾素
抑制剂,可用于治疗肾素诱导的高血压。